Rephrasing from feedback

Author: romain-at-adacore

courses/rust_essentials/050_tuples_and_arrays/01_arrays.rst

@@ -40,7 +40,7 @@ Safety and Initialization
 
 **Safety**
 
-  - Accesses are **checked at runtime** for being out-of-bounds
+  - Compile-time and runtime **out-of-bounds checks**
   - Accessing an element beyond the defined length will cause a *panic*
     - A *panic* is a form of program termination
 

courses/rust_essentials/050_tuples_and_arrays/03_destructuring.rst

@@ -35,7 +35,7 @@ Irrefutable Patterns with Tuples
   - Irrefutable tuple pattern = **guaranteed match**
   - Used in :rust:`let` statements
     - :rust:`let` bindings must always succeed
-    - Pattern **must** always match the data structure
+    - Pattern must **always** match the data structure
 
 .. code:: rust